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4954-08-9

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4954-08-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4954-08-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,9,5 and 4 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 4954-08:
(6*4)+(5*9)+(4*5)+(3*4)+(2*0)+(1*8)=109
109 % 10 = 9
So 4954-08-9 is a valid CAS Registry Number.

4954-08-9Downstream Products

4954-08-9Relevant articles and documents

A (2)H N.M.R. study of the Steroidal Dienone-Phenol Rearrangement

Avent, Antony G.,Hanson, James R.,Yang-zhi, Ling,Sadler, Ian H.

, p. 2129 - 2132 (2007/10/02)

The extent of deuteriation is reported for the products of the dienone-phenol rearrangement of androsta-1,4-dien-3-ones using as catalysts (i) deuteriated acetic anhydride, acetic acid, and zinc chloride; (ii) deuterium bromide; and (iii) methanol, ethyl orthoformate, and sulphuric acid.The stereochemistry of the acid-catalysed enolization of 1-dehydrotestosterone is also reported.

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